Patent · US Expired

Control device for controlling an internal combustion engine with a variably controlled valve stroke

US6453857B1 · kind B1 · utility

0Cited by

3References

2Claims

0Family size

Assignee

Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

Gerd Kraemer · Kohlhof, DE
Klaus Bourdon · Pfaffenhofen an der Ilm, DE
Helmut Eichlseder · Graz, AT
Heiko Konrad · Hockenheim, DE

Key dates

Filing date	Sep 28, 2001
Grant date	Sep 24, 2002
Priority date	—
Expiry date	Sep 28, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A control device for controlling an internal combustion engine with a variably controlled valve stroke and with a butterfly valve in an air intake tract is provided. The control device is equipped with devices with which the even running of the internal combustion engine is monitored and through which the butterfly valve is actuated in the closing direction when a defined uneven running threshold value has been exceeded and when the valve stroke is smaller than a specified threshold until the value drops below the uneven running threshold value again.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.